Fix formatting.

Author: brnnmrls

CHANGELOG.md

@@ -1,7 +1,7 @@
 # 5.0.0
 - Update keychain default on Mac to be data protected ([#259](https://github.com/google/GTMAppAuth/pull/259))
 - Update AppAuth dependency to 2.0.0 ([#262](https://github.com/google/GTMAppAuth/pull/262))
-- Fix Swift 6 mode @Sendable closure warning ([#263](https://github.com/google/GTMAppAuth/pull/263))
+- Fix Swift 6 mode `@Sendable` closure warning ([#263](https://github.com/google/GTMAppAuth/pull/263))
 
 # 4.1.1
 - Fix PrivacyInfo bundling issues ([#241](https://github.com/google/GTMAppAuth/pull/241))